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Video: Mammograms: Sorting through confusing advice

New research shows getting called back for false positives on a mammogram is part of the process. "Early Show" medical correspondent Dr. Jennifer Ashton explains why this is happening

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Yellowing Eyes May Keep Seniors Awake

Aging is not for the squeamish: skin sags, joints ache and hearing might start to go. And many seniors have trouble sleeping, which can lead to other health problems.

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Video: Veterans and dementia

New research shows a link between older veterans who had a traumatic brain injury and an increased risk of dementia. Dr. Jennifer Ashton profiles a young Afghanistan veteran who could be at risk

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The Smallest Hitchhikers

We know that at the heart of at least two ocean basins--the North Pacific and the North Atlantic--tiny plastic fragments the size of confetti or smaller are accumulating on the sea surface by the tens of thousands, the remnants of discarded grocery bags, cups, bottles and other waste. Last year a group of researchers publishing in the journal Science reported a mystery: during a 22-year survey of plastic accumulation in the western North Atlantic, the scientists saw no increase in the amount of plastic, despite a surge in annual global plastic production from about 75 million to 245 million metric tons over the same period. Where was it going

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